Radiofrequency has been transformed from obscurity to mainstream application thathelp to speed up the process of manufacture products and material. A few yearsago, people usually considered RFID from a supply chain perspective. But today,RFID is being used in a variety of ways without realising it. RFID (Radio Frequency Identification)is a system to read information and automate identification of an object orperson by using radio waves.
RFID uses multiple radio frequencies and manytypes of tags with different modes of communications and power sources. RFIDsystems consists of 3 components; a transceiver (RFID Reader), a scanningantenna and a transponder. Transponder is the RFID tag that consists ofmicrochip, antenna and case that has been programmed with information and thescanning antenna outputs the radio frequency signal over a relatively shortperiod of time.
It provides a means of communicating with the transponder andprovides the communication energy to the RFID tag in the case of passive tag. Passive RFID tags needed energytransfer from the reader via radio frequency which do not insists of batteriesand communication range are very short. ActiveRFID tags have its own power source and these tags can still get the signaleven if the reader stay farther. Sometimes called semi-passive or semi-active, battery-assisted passive (BAP) tags virtuallypassive RFID tags that combine important active tags. To power on the chip, BAPtags typically use an integrated power supply, usually a battery and the energycaptured from the reader then can be used for backscatter. When an RFID tagenters a read zone of the scanning antenna, its data is captured by the readerwhich microchips activated and sends out the information on the microchip to ahost computer or programmable controller for action.
Almost all libraries around theworld are using RFID tags to tag books. Accordingto managing director Lim Peck Hui of Tunity Technology, ‘When it comes totagging or tracking items, RFID works better than barcodes and QR codes asmultiple RFID tags can be read from a distance at an instant, so data iscaptured quickly’. RFID systems can improve the ability if staff orcustomer to find out the location of books. When compare barcodes system withRFID systems, RFID systems can read multiple tags more than 100 simultaneouslybut barcodes can only be read one at a time manually.
In additional, barcodesscanners needs to read the barcode directly whereas RFID tags does not need tobe placed in line with the scanner and can be scan or read farther thanbarcode. The data in the barcode printed on the sticker and needs to be clearlyvisible so that it can be scan easily. The exposure of the label can easily bedamaged due to weather or other reasons and forgery become easier whereas RFID doesn’tsuffer from any of this because it does not require sight and its electronicnature means that data can be encrypted to prevent any leakage of information. Although RFID technology has beeneffectively used which possess a lot of benefits that convince people, butthere are still exist some technical barriers need to be conquer to optimizeits application. First of all, compare with barcode system, RFID systems areusually more expensive whether software or hardware. RFID needs to maintainmore expensive equipment throughout the life of the solution. Additionally,